1984 Isuzu Piazza vs. 1978 Renault 18
To start off, 1984 Isuzu Piazza is newer by 6 year(s). Which means there will be less support and parts availability for 1978 Renault 18. In addition, the cost of maintenance, including insurance, on 1978 Renault 18 would be higher. At 1,993 cc (4 cylinders), 1984 Isuzu Piazza is equipped with a bigger engine. In terms of performance, 1984 Isuzu Piazza (148 HP @ 5400 RPM) has 85 more horse power than 1978 Renault 18. (63 HP @ 5500 RPM). In normal driving conditions, 1984 Isuzu Piazza should accelerate faster than 1978 Renault 18. With that said, vehicle weight also plays an important factor in acceleration. 1984 Isuzu Piazza weights approximately 295 kg more than 1978 Renault 18. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 1984 Isuzu Piazza (226 Nm @ 3000 RPM) has 123 more torque (in Nm) than 1978 Renault 18. (103 Nm @ 3000 RPM). This means 1984 Isuzu Piazza will have an easier job in driving up hills or pulling heavy equipment than 1978 Renault 18.
Compare all specifications:
| 1984 Isuzu Piazza | 1978 Renault 18 | |
| Make | Isuzu | Renault |
| Model | Piazza | 18 |
| Year Released | 1984 | 1978 |
| Engine Position | Front | Front |
| Engine Size | 1993 cc | 1397 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 148 HP | 63 HP |
| Engine RPM | 5400 RPM | 5500 RPM |
| Torque | 226 Nm | 103 Nm |
| Torque RPM | 3000 RPM | 3000 RPM |
| Engine Bore Size | 88 mm | 76.1 mm |
| Engine Stroke Size | 82 mm | 77 mm |
| Engine Compression Ratio | 7.9:1 | 9.2:1 |
| Fuel Type | Gasoline | Gasoline |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 3 doors | 5 doors |
| Vehicle Weight | 1280 kg | 985 kg |
| Vehicle Length | 4290 mm | 4410 mm |
| Vehicle Width | 1610 mm | 1710 mm |
| Vehicle Height | 1330 mm | 1410 mm |
| Wheelbase Size | 2510 mm | 2450 mm |
